Pocket knife



FIG. 1 is a perspective view of a pocket knife according to our new design;

FIG. 2 is another perspective view of thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a top elevation view thereof; and,

FIG. 8 is a bottom plan view thereof.

The dash-dash broken lines showing in the views illustrate unclaimed portions of the pocket knife and form no part of the claimed design. 

CLAIM The ornamental design for a pocket knife, as shown and described. 